scholarly journals Functionalised metal–organic frameworks: a novel approach to stabilising single metal atoms

2017 ◽  
Vol 5 (30) ◽  
pp. 15559-15566 ◽  
Author(s):  
P. Á. Szilágyi ◽  
D. M. Rogers ◽  
I. Zaiser ◽  
E. Callini ◽  
S. Turner ◽  
...  
Keyword(s):  
Transition Metals ◽  
Metal Organic Frameworks ◽  
Model System ◽  
Single Atoms ◽  
Metal Atoms ◽  
Novel Approach ◽  
Metal Organic

We have investigated the potential of metal–organic frameworks for immobilising single atoms of transition metals using a model system of Pd supported on NH2-MIL-101(Cr).

cis-to-trans isomerization of azobenzene investigated by using thin films of metal–organic frameworks

2015 ◽  
Vol 17 (35) ◽  
pp. 22721-22725 ◽  
Author(s):  
Xiaojuan Yu ◽  
Zhengbang Wang ◽  
Maria Buchholz ◽  
Nena Füllgrabe ◽  
Sylvain Grosjean ◽  
...  
Keyword(s):  
Thin Films ◽  
Metal Organic Frameworks ◽  
Model System ◽  
Trans Isomerization ◽  
System P ◽  
Metal Organic

The energetic barrier for the cis-to-trans isomerization of azobenzene was experimentally investigated by using thin films of azobenzene-containing MOFs as well-defined model system.

Structural diversity and magnetic properties of three metal–organic frameworks assembled from a T-shaped linker

CrystEngComm ◽  
2015 ◽  
Vol 17 (3) ◽  
pp. 604-611 ◽  
Author(s):  
Jing Wang ◽  
Xuemin Jing ◽  
Yu Cao ◽  
Guanghua Li ◽  
Qisheng Huo ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Transition Metals ◽  
Dicarboxylic Acid ◽  
Metal Organic Frameworks ◽  
Structural Diversity ◽  
Acid Ligand ◽  
Metal Organic

Three helical metal–organic frameworks were solvothermally synthesized by reacting a T-shaped linker, 2,2′-bipyridyl-5,5′-dicarboxylic acid ligand with transition metals, and the magnetic properties of the compounds were studied.

Bis(pyrazolato)-Based Metal–Organic Frameworks Fabricated with 4,4′-Bis((3,5-dimethyl-1H-pyrazol-4-yl)methyl)biphenyl and Late Transition Metals

2014 ◽  
Vol 14 (6) ◽  
pp. 3142-3152 ◽  
Author(s):  
Aurel Tăbăcaru ◽  
Claudio Pettinari ◽  
Fabio Marchetti ◽  
Simona Galli ◽  
Norberto Masciocchi
Keyword(s):  
Transition Metals ◽  
Metal Organic Frameworks ◽  
Late Transition Metals ◽  
Metal Organic ◽  
Late Transition

scholarly journals L-Tryptophan metal-organic frameworks based on transition metals: Preparation, characterization and application for ruthenium3+ ions sorption

2021 ◽  
Author(s):  
Olga Yu. Ivanshina ◽  
Iga Zuba ◽  
Sergey V. Sumnikov ◽  
Asif A. Nabiyev ◽  
Andrzej Pawlukojć
Keyword(s):  
Transition Metals ◽  
Metal Organic Frameworks ◽  
Metal Organic

scholarly journals Development of Phosphonate Monoesters Building Units in Metal-Organic Frameworks

2014 ◽  
Vol 70 (a1) ◽  
pp. C1127-C1127
Author(s):  
Benjamin Gelfand ◽  
Jian-Bin Lin ◽  
George Shimizu
Keyword(s):  
Metal Organic Frameworks ◽  
Design Strategy ◽  
Layered Material ◽  
Water Stability ◽  
New Materials ◽  
Isopropyl Esters ◽  
Porous Framework ◽  
Metal Atoms ◽  
Metal Organic ◽  
Ester Moiety

The use of predictable coordination geometries and the development of new ligands has allowed supramolecular chemists to design a plethora of new materials. Among these are metal-organic frameworks (MOFs), which are composed of ligands coordinating to metal atoms or clusters to generate a framework with potential porosity. MOFs exemplify supramolecular design strategy as their extended structure and tunable properties allow them to be applied for various applications.1 To date, many MOFs utilize carboxylates as the coordinating group since they have well studied coordination geometries and thus predictable framework topologies. Though there are examples of carboxylate-based MOFs possessing water stability, most do not possess this key feature, hindering their application in industrial settings. Phosphonate monoesters (PMEs) have been investigated as a means to impart water stability to a MOF by kinetically shielding the linker-metal bond with the ester moiety.2 Unfortunately, phosphonate monoesters have relatively unexplored coordination geometries, with most studies focusing on chlodronic acid and its derivatives, which do not typically form porous materials. In an attempt to establish building units based on PMEs, 1,4-benzenediphosphonate monoester ligands have been synthesized, coordinated to Cu(II), and characterized. It was found that while the methyl and ethyl analogues form similar 3-D structures with poor water stability,3 the isopropyl analogue forms a layered material possessing water stability. The isopropyl analogue contains chains of Cu-PME, with the isopropyl esters lying directly above and below the Cu atoms, kinetically shielding this bond from water. This water stable building unit was predicted to generate a porous framework with non-linear ligands. To test this hypothesis, 1,3,5-benzenetriphosphonate monoisopropyl ester was synthesized and coordinated to Cu(II). Unfortunately, no single crystal of sufficient quality has been produced, though a predicted and refined structure matches well to various characterization techniques. As predicted, this material is porous and does not degrade in harsh humid conditions (353K and 90% relative humidity).

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